Biomass & Bioenergy最新文献_第7页

A critical review on green synthesis and modification techniques of biochar: Comparison of efficacies towards adsorption capacities 生物炭的绿色合成和改性技术综述：吸附性能的比较

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-13 DOI: 10.1016/j.biombioe.2025.107859

Puspendu Choudhury, Mriganka Sekhar Manna, Soma Nag

{"title":"A critical review on green synthesis and modification techniques of biochar: Comparison of efficacies towards adsorption capacities","authors":"Puspendu Choudhury, Mriganka Sekhar Manna, Soma Nag","doi":"10.1016/j.biombioe.2025.107859","DOIUrl":"10.1016/j.biombioe.2025.107859","url":null,"abstract":"<div><div>The green synthesis and modification of biochar are two technological advances in bio-adsorbent-mediated wastewater treatment. The environmental sustainability, circular economy, waste valorization, and efficient management of pollutants are reviewed. \"Green synthesis\" is the use of biological extracts in the synthesis of metal and metal oxide nanoparticles. The green-synthesized nanoparticles are amalgamated with biochar modified by chemical, mechanical, or thermal means, both in situ and ex situ. The methods of synthesis, types and agents of modification are compared for improved adsorption capacities of biochar. The highest absorption capacity (∼400 mg g<sup>−1</sup>) is achieved by chemical activation followed by thermal (∼240 mg g<sup>−1</sup>) and mechanical (∼70 mg g<sup>−1</sup>) ones. Meanwhile, amines and quaternary ammonium compounds are found as the best chemical agents for the functionalization of biochar. The quantitative analyses of the relationship between biochar modification and its adsorptive capacity are proposed by recent developments in chemistry, such as synchrotron X-ray, gradient boosting regression (GBR) model. Artificial neural networks (ANN), AI, and ML predictive models are also proposed for more accurate assessment of activation mechanisms and adsorption capacities.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107859"},"PeriodicalIF":5.8,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Co-pyrolysis behaviour of de-oiled mahua cake and waste LDPE using thermogravimetric analysis and artificial neural network 用热重分析和人工神经网络研究脱油麻花饼与废LDPE共热解行为

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-13 DOI: 10.1016/j.biombioe.2025.107870

Kaumik Gandhi , Yash Jaiswal , Bhupendra Suryawanshi , Kantilal Chouhan , Hemant Kumar , Ajay Sharma

{"title":"Co-pyrolysis behaviour of de-oiled mahua cake and waste LDPE using thermogravimetric analysis and artificial neural network","authors":"Kaumik Gandhi , Yash Jaiswal , Bhupendra Suryawanshi , Kantilal Chouhan , Hemant Kumar , Ajay Sharma","doi":"10.1016/j.biombioe.2025.107870","DOIUrl":"10.1016/j.biombioe.2025.107870","url":null,"abstract":"<div><div>Pyrolysis of biomass-plastic waste mixtures offers a promising pathway for sustainable energy recovery, yet the underlying kinetic interactions remain largely unexplored. This study investigates the co-pyrolysis behavior of de-oiled mahua cake (DOMC) and waste low-density polyethylene (LDPE) using thermogravimetric analysis (TGA), model-free kinetic modeling, and artificial neural network (ANN) prediction. Kinetic analysis using Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink, Tang, and Boswell methods revealed a reduction in activation energy (E<sub>a</sub>) for LDPE when mixed with DOMC, suggesting a synergistic effect that enhances decomposition efficiency. The ANN model demonstrated high predictive accuracy (R<sup>2</sup> ∼1), effectively capturing pyrolysis behavior across different heating rates (5, 10, and 20 °C/min). The findings highlight the potential of co-pyrolysis for reducing energy barriers in plastic waste degradation and underscore the applicability of AI-based predictive modeling for pyrolysis optimization.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107870"},"PeriodicalIF":5.8,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolutionary engineering and mutagenesis as alternatives to improve Spathaspora passalidarum for second-generation ethanol production 进化工程和诱变作为改良passalaspora第二代乙醇生产的选择

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-13 DOI: 10.1016/j.biombioe.2025.107885

Juliane M. da Silveira , Matheus de A. Boeira , Marcel B. Santana Jr , Marian R. Greidanus , Jesús J. Ascencio , Anuj K. Chandel , Débora Trichez , Boris U. Stambuk , Jaciane L. Ienczak

{"title":"Evolutionary engineering and mutagenesis as alternatives to improve Spathaspora passalidarum for second-generation ethanol production","authors":"Juliane M. da Silveira , Matheus de A. Boeira , Marcel B. Santana Jr , Marian R. Greidanus , Jesús J. Ascencio , Anuj K. Chandel , Débora Trichez , Boris U. Stambuk , Jaciane L. Ienczak","doi":"10.1016/j.biombioe.2025.107885","DOIUrl":"10.1016/j.biombioe.2025.107885","url":null,"abstract":"<div><div>The pretreatment step required for second-generation ethanol production releases inhibitory compounds that are harmful to yeasts, impacting the use of the hemicellulosic fraction. A proven-effective strategy to overcome this bottleneck of the process is to enhance yeast robustness and resistance to inhibitors. This study aimed to enhance the performance of the yeast <em>Spathaspora passalidarum</em> to the hemicellulosic hydrolysate (HH) obtained from the acid pretreatment of sugarcane bagasse using evolutionary engineering (EE) and mutagenesis. Initially, the tolerance to inhibitors and the HH were analyzed to determine the media composition for EE. The parental strain was subjected to three EE strategies and mutagenesis with ultraviolet (UV) light or ethyl methanesulfonate (EMS). During the inhibition tests, acetic acid had the most significant negative impact on yeast performance, with no growth observed at concentrations exceeding 1.5 g/L. From the adopted strategies, three strains with improved fermentative potential were obtained: JY5102 (from the EE strategy 3), JY5102UV (resulting from the UV light mutagenesis of JY5102), and JY5102EMS (resulting from the EMS mutagenesis of JY5102). The strains were used to ferment the HH, and the mutated strains, JY5102UV and JY5102EMS, stood out with Y<sub>EtOH</sub> (from glucose and xylose consumption) of 0.39 ± 0.00 and 0.42 ± 0.01 g/g, respectively. This resulted in increased productivity by 1.6-fold and 1.5-fold, respectively, compared to the parental strain. The improvement in ethanol production may be related to adaptations and mutations associated with xylitol production in both strains, JY5102UV and JY5102EMS, resulting in a 30 % and 60 % decrease in Y<sub>Xylitol</sub>, respectively.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbial lipids from municipal solid wastes to advanced aviation and marine e-fuels via catalytic hydrotreatment 通过催化加氢处理从城市固体废物到先进航空和海洋电子燃料的微生物脂质

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-13 DOI: 10.1016/j.biombioe.2025.107866

Athanasios Dimitriadis, Nikos Tourlakidis, Stella Bezergianni

{"title":"Microbial lipids from municipal solid wastes to advanced aviation and marine e-fuels via catalytic hydrotreatment","authors":"Athanasios Dimitriadis, Nikos Tourlakidis, Stella Bezergianni","doi":"10.1016/j.biombioe.2025.107866","DOIUrl":"10.1016/j.biombioe.2025.107866","url":null,"abstract":"<div><div>]The current manuscript investigates the technical feasibility for the production of advanced aviation and marine e-fuels from microbial lipids via hydrotreatment. Two microbial lipids produced from municipal solid wastes (spent coffee grounds and orange peels) using the selected oleaginous yeast of the <em>L. starkey</em> and <em>C. curvatus</em> were tested. Due to the limited microbial lipids availability, the free fatty acid composition (FFA) of the microbial lipids derived from each waste was analyzed, based on which various vegetable oils (palm, flaxseed, olive and pumpkin oil) were blended to formulated the two lipid feeds that match by 82 and 84 % the FFA profile to the original ones. The two simulated feedstocks were hydrotreated in a TRL3 plant targeting to optimize the conversion process via the investigation of various operating windows. The optimum operating window for the examined feeds was found at 330 °C, 83 bar pressure, 1 hr<sup>−1</sup> LHSV and 840 NL/L hydrogen/oil ratio. Hydroprocessing of the simulated feedstocks was able to lead to diesel and jet range hydrocarbons that consists from N-paraffins up to 95 wt%. Upon the identification of the optimal operating window and feedstock, 10 L of total hydrotreated product was produced and fractionated rendering aviation, marine and road transport hydrocarbons. As the hydrogen for the hydrotreatment plant is produced via solar energy, the produced fuels are called electrified fuels (“e-fuels). The produced e-fuels were evaluated according to standard fuel specifications (Jet A1, DMA, EN 590), showing that good quality road transport, marine and aviation e-fuels can be produced via hydroprocessing of microbial lipids.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107866"},"PeriodicalIF":5.8,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Techno-economic and life cycle assessment of CO2 storage using amorphous carbon derived from end-of-life Polyethylene Terephthalate 使用报废聚对苯二甲酸乙二醇酯衍生的无定形碳储存二氧化碳的技术经济和生命周期评估

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-11 DOI: 10.1016/j.biombioe.2025.107864

K. Sivagami , P. Prabakar , A.S Kiran Balaji , Nadavala Siva Kumar , Samarshi Chakraborty , Bandaru Kiran

{"title":"Techno-economic and life cycle assessment of CO2 storage using amorphous carbon derived from end-of-life Polyethylene Terephthalate","authors":"K. Sivagami , P. Prabakar , A.S Kiran Balaji , Nadavala Siva Kumar , Samarshi Chakraborty , Bandaru Kiran","doi":"10.1016/j.biombioe.2025.107864","DOIUrl":"10.1016/j.biombioe.2025.107864","url":null,"abstract":"<div><div>Plastics have become an integral part of our daily life. The advantages and benefits of plastic applications are counterbalanced by its drawbacks. Governments across the world are struggling to repurpose or value used plastic products. To minimize greenhouse gas emissions into the atmosphere, this study aims to recover carbon from waste Polyethylene Terephthalate (PET) based plastics into value-added products. The study also aims to model and simulate the feasibility of converting End of Life PET(EOL-PET) to porous carbon for CO<sub>2</sub> capture. Pyrolysis is regarded as one of the most effective methods for turning long-chain hydrocarbons into low-molecular-weight compounds. EOL-PET can be converted to value-added products like pyrolysis oil and porous carbon. In this study, non-recyclable PET plastics are pyrolyzed into gaseous, liquid, and solid/ash products. EOL-PET is carbonized, and the carbonized PET is heated with KOH (activating agent) in the presence of N<sub>2</sub>. The KOH method improves the textural properties of the porous carbon and the CO<sub>2</sub> uptake and increases the efficiency of adsorption. Simulated the complete process of the conversion of Waste PET into porous carbon and that porous carbon used as an adsorbent for CO<sub>2</sub> storage using Aspen Plus. Performed the detailed techno-economic feasibility using Aspen Plus, obtained the pay-back period for derived porous carbon from waste PET and CO<sub>2</sub> storage is 2.5 years. Performed the detailed environmental feasibility analysis using OpenLCA, it resulted that the Global warming potential of porous carbon is higher than Carbon derived from various sources like woody biomass, Activated Carbon (AC) from olive waste cakes, and granulated AC.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107864"},"PeriodicalIF":5.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating maize as a sustainable energy crop for bioethanol production: Delineating cultivation, utilization, biotechnological and environmental perspectives 研究玉米作为生物乙醇生产的可持续能源作物：描述栽培，利用，生物技术和环境的观点

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-11 DOI: 10.1016/j.biombioe.2025.107867

Gurkanwal Kaur , Mehak Sethi , Veena Devi , Amanpreet Kaur , Harmandeep Kaur , Dharam Paul Chaudhary

{"title":"Investigating maize as a sustainable energy crop for bioethanol production: Delineating cultivation, utilization, biotechnological and environmental perspectives","authors":"Gurkanwal Kaur , Mehak Sethi , Veena Devi , Amanpreet Kaur , Harmandeep Kaur , Dharam Paul Chaudhary","doi":"10.1016/j.biombioe.2025.107867","DOIUrl":"10.1016/j.biombioe.2025.107867","url":null,"abstract":"<div><div>Biofuels are becoming viable alternatives to fossil fuels in the recent times due to rapidly declining supply of the latter. Ethanol production using agricultural feedstock is promoted to meet the increasing energy demands, mitigate environmental challenges presented by conventional fossil fuels and boost economic conditions in agro-energy sector. Among cereals, maize holds a prominent position in terms of global production, after wheat and rice, and is a fundamental ingredient in several agro-based industries. Including maize as a raw material in the production chain of biofuels requires a thorough analysis of market aspects, locally and globally, while gaining a proper understanding of the energy matrix involved in the technical process. This work proposes the inclusion of maize as a raw material for first- and second-generation ethanol production and highlights its role in environmental, social, economic, and energy-based development. The production and utilization of maize crop by the top global producers, the United States, for instance, and the rapidly growing economies, e.g., India, have been studied with an aim to compare the progress and strategies adopted to reduce dependence on imported petroleum products. Recent trends in maize cultivation and export, its utilization pattern, bioprocess defining factors and their optimization, microbial strain improvement, improved fermentation technologies, and various other strategies to enhance maize bioethanol production systems have been discussed. Further, this study discusses the removal of bottlenecks in bioethanol expansion, blending policies and biotechnological advances for improving biofuel production.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107867"},"PeriodicalIF":5.8,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering biomass-derived hard carbon for secondary batteries and supercapacitors. Are we there yet? A comprehensive review 用于二次电池和超级电容器的工程生物质衍生硬碳。我们到了吗？全面回顾

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-10 DOI: 10.1016/j.biombioe.2025.107844

Unnikrishna Menon , Brajesh Kumar Dubey , Amit Kumar

{"title":"Engineering biomass-derived hard carbon for secondary batteries and supercapacitors. Are we there yet? A comprehensive review","authors":"Unnikrishna Menon , Brajesh Kumar Dubey , Amit Kumar","doi":"10.1016/j.biombioe.2025.107844","DOIUrl":"10.1016/j.biombioe.2025.107844","url":null,"abstract":"<div><div>Addressing the global energy demand requires innovative solutions, particularly in light of rising atmospheric CO<sub>2</sub> levels and the imperative to transition away from coal. Carbonaceous materials obtained from biomass waste streams (known as hard carbons) show considerable potential owing to their abundance and beneficial characteristics for energy storage devices. However, there is a lack of understanding of the complex and heterogeneous nature of biomass. This hinders industrialists from making well-informed decisions on material selection. This review explores the progression of waste biomass-derived hard carbon materials tailored as a sustainable alternative to conventional carbon sources. Additionally, the significance of usually disregarded qualitative analysis of biocarbon, including H/C and O/C ratio, and the structural heterogeneity of similar waste biomass feedstocks following different heat treatment methods are addressed. These compositional changes lead to variations in electrochemical performance. The correlation between material properties and electrochemical performance is established through a comprehensive analysis of synthesis methodologies and resulting structural modifications. Also, various recent publications report specific capacitance of biomass-based hard carbon prediction using Machine Learning (ML). However, this review identifies certain limitations in existing approaches. These limitations are also discussed in detail, contributing to new knowledge in the field. Finally, the challenges in storage mechanisms and perspectives on future research directions with an insight into ML influencing the performance of hard carbon-based electrodes are examined.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107844"},"PeriodicalIF":5.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Techno-economic assessment of a plant for the upgrading of MSW biogas to synthetic natural gas by thermocatalytic methanation 某城市生活垃圾沼气热催化甲烷化制合成气装置技术经济评价

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-10 DOI: 10.1016/j.biombioe.2025.107871

P. Sanz-Monreal, V.D. Mercader, P. Aragüés-Aldea, P. Durán, E. Francés, J. Herguido, J.A. Peña

{"title":"Techno-economic assessment of a plant for the upgrading of MSW biogas to synthetic natural gas by thermocatalytic methanation","authors":"P. Sanz-Monreal, V.D. Mercader, P. Aragüés-Aldea, P. Durán, E. Francés, J. Herguido, J.A. Peña","doi":"10.1016/j.biombioe.2025.107871","DOIUrl":"10.1016/j.biombioe.2025.107871","url":null,"abstract":"<div><div>This study evaluates the techno-economic feasibility of a plant designed to produce synthetic natural gas (SNG) from biogas through direct catalytic methanation. The proposed facility is simulated with <em>Aspen Plus</em>® v14, using a comprehensive approach that covers the entire process, from biogas pretreatment to the production of the final product. The installation aims to contribute to the development of <em>Power-to-Gas</em> (<em>Power-to-Methane</em>) strategy for decarbonization.</div><div>The plant, to be located in northeastern Spain, operates at an industrial scale with a production capacity of approximately 1100 Nm<sup>3</sup>/h of SNG, obtained from a 1425 Nm<sup>3</sup>/h biogas plant. The process includes five main stages to meet Spanish gas quality standards for grid injection: desulfurization, using amines for sulfur removal; electrolysis, for the generation of renewable hydrogen; thermocatalytic methanation, which combines CO<sub>2</sub> from the biogas with hydrogen to enrich the methane content; dehydration, to meet SNG moisture specifications; and cogeneration, intended for the joint production of electricity and steam to meet the plant's energy demands.</div><div>A detailed analysis of investment costs (CAPEX) and operational expenses (OPEX) is conducted, identifying the key factors influencing the project's profitability. The economic assessment indicates a total capital investment of 21.83 M€ and operational expenses nearly 8 M€ annually. The profitability threshold for the base scenario is estimated at 91.75 €/MWh, exceeding the 2023 natural gas market average in the Iberic peninsula (39.11 €/MWh), highlighting the current economic challenges of SNG production.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107871"},"PeriodicalIF":5.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural characterization of enzymatic lignin from the saccharification of steam-exploded Eucalyptus globulus bark 气爆桉树皮糖化酶促木质素的结构表征

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-10 DOI: 10.1016/j.biombioe.2025.107884

Sandra Magina, Dmitry V. Evtuguin

{"title":"Structural characterization of enzymatic lignin from the saccharification of steam-exploded Eucalyptus globulus bark","authors":"Sandra Magina, Dmitry V. Evtuguin","doi":"10.1016/j.biombioe.2025.107884","DOIUrl":"10.1016/j.biombioe.2025.107884","url":null,"abstract":"<div><div>Enzymatic lignin (EL) was assessed by acidolysis from the lignocellulosic residue obtained after enzymatic saccharification of steam exploded <em>Eucalyptus globulus</em> bark. The structural characteristics of the obtained dioxane lignin were evaluated by wet chemistry and spectroscopy techniques (Fourier transform infrared spectroscopy, FTIR), 1D and 2D nuclear magnetic resonance (NMR) spectroscopy, and molecular weight by size exclusion chromatography (SEC). The main structural differences expressed per 100 phenyl propane units (PPU) between the dioxane lignins from the initial bark and the cellolignin residue obtained by enzymatic saccharification of the steam-exploded bark were the decrease in number of β-<em>O</em>-4′ structures (52 <em>vs</em> 40/100 PPU), increased amounts of β-β′ and β-5′ structures (11 <em>vs</em> 13/100 PPU) and increased molecular weight (Mw of 2400 Da vs 2700 Da) of the latter. A part of syringyl units in EL was converted into gallate-type structures as a result of partial demethoxylation of syringyl structures via homolysis that occurred during steam explosion pre-treatment.</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107884"},"PeriodicalIF":5.8,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pyrolysis of oleaster seed under non-isothermal conditions to assess as bioenergy potential: Kinetic, thermodynamic and master plot analyses 油橄榄籽在非等温条件下热解作为生物能源潜力的评估：动力学、热力学和主图分析

IF 5.8 2区生物学

Biomass & Bioenergy Pub Date : 2025-04-09 DOI: 10.1016/j.biombioe.2025.107861

Meltem Kizilca Coruh

{"title":"Pyrolysis of oleaster seed under non-isothermal conditions to assess as bioenergy potential: Kinetic, thermodynamic and master plot analyses","authors":"Meltem Kizilca Coruh","doi":"10.1016/j.biombioe.2025.107861","DOIUrl":"10.1016/j.biombioe.2025.107861","url":null,"abstract":"<div><div>This study aims to evaluate the bioenergy potential of oleaster seed (OS) and to determine the pyrolysis characteristics and kinetics required for the efficient design and optimization of thermochemical processes for bioenergy production. To achieve this, the pyrolysis processes of OS were extensively analyzed using the thermogravimetric analysis (TGA) method. Thermogravimetric analyses were conducted in a nitrogen (N<sub>2</sub>) atmosphere at heating rates of 5, 10, 15, and 20 K min<sup>−1</sup>, from room temperature up to 1173 K. Through these analyses, the decomposition behavior and bioenergy potential of OS were evaluated. For kinetic analysis, various iso-conversion models, including Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink, and Tang, were employed to calculate kinetic parameters such as activation energy and pre-exponential factor, as well as thermodynamic parameters like enthalpy (<em>ΔH</em>), entropy (<em>ΔS</em>), and Gibbs free energy (<em>ΔG</em>). To determine the reaction mechanism, the Coats-Redfern (CR) method and the master plot approach were utilized. The most suitable model to describe the pyrolytic decomposition process is the chemical kinetics model (F<sub>3</sub>).</div></div>","PeriodicalId":253,"journal":{"name":"Biomass & Bioenergy","volume":"198 ","pages":"Article 107861"},"PeriodicalIF":5.8,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0